feat(main.py): implement auto-repeat seeking for video editor with configurable delays and rates
This commit is contained in:
114
croppa/main.py
114
croppa/main.py
@@ -19,6 +19,13 @@ class VideoEditor:
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MIN_PLAYBACK_SPEED = 0.1
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MAX_PLAYBACK_SPEED = 10.0
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# Auto-repeat seeking configuration
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INITIAL_REPEAT_DELAY = 0.5 # seconds before auto-repeat starts
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REPEAT_RATE_SLOW = 0.15 # seconds between seeks when holding key
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REPEAT_RATE_FAST = 0.05 # seconds between seeks after holding for a while
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FAST_SEEK_THRESHOLD = 2.0 # seconds before switching to fast repeat
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DISPLAY_UPDATE_THROTTLE = 0.033 # minimum time between display updates (30 FPS)
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# Timeline configuration
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TIMELINE_HEIGHT = 60
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TIMELINE_MARGIN = 20
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@@ -90,6 +97,14 @@ class VideoEditor:
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self.key_first_press_time = 0
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self.last_seek_time = 0
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# Auto-repeat seeking state
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self.auto_repeat_active = False
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self.auto_repeat_key = None
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self.auto_repeat_direction = 0
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self.auto_repeat_shift = False
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self.auto_repeat_ctrl = False
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self.last_display_update = 0
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# Crop settings
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self.crop_rect = None # (x, y, width, height)
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self.crop_selecting = False
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@@ -499,6 +514,74 @@ class VideoEditor:
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self.seek_video(frames)
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def start_auto_repeat_seek(self, key: int, direction: int, shift_pressed: bool, ctrl_pressed: bool):
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"""Start auto-repeat seeking for a held key"""
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if self.is_image_mode:
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return
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# If the same key is already being auto-repeated, don't restart
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if (self.auto_repeat_active and
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self.auto_repeat_key == key and
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self.auto_repeat_direction == direction and
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self.auto_repeat_shift == shift_pressed and
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self.auto_repeat_ctrl == ctrl_pressed):
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return
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self.auto_repeat_active = True
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self.auto_repeat_key = key
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self.auto_repeat_direction = direction
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self.auto_repeat_shift = shift_pressed
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self.auto_repeat_ctrl = ctrl_pressed
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self.key_first_press_time = time.time()
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self.last_seek_time = 0
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# Do initial seek immediately
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self.seek_video_with_modifier(direction, shift_pressed, ctrl_pressed)
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def stop_auto_repeat_seek(self):
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"""Stop auto-repeat seeking"""
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self.auto_repeat_active = False
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self.auto_repeat_key = None
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self.auto_repeat_direction = 0
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self.auto_repeat_shift = False
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self.auto_repeat_ctrl = False
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def update_auto_repeat_seek(self):
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"""Update auto-repeat seeking if active"""
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if not self.auto_repeat_active or self.is_image_mode:
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return
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current_time = time.time()
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time_since_first_press = current_time - self.key_first_press_time
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# Determine repeat rate based on how long the key has been held
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if time_since_first_press < self.INITIAL_REPEAT_DELAY:
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# Still in initial delay period
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return
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elif time_since_first_press < self.FAST_SEEK_THRESHOLD:
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# Slow repeat rate
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repeat_rate = self.REPEAT_RATE_SLOW
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else:
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# Fast repeat rate
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repeat_rate = self.REPEAT_RATE_FAST
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# Check if enough time has passed for the next seek
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if current_time - self.last_seek_time >= repeat_rate:
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self.seek_video_with_modifier(
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self.auto_repeat_direction,
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self.auto_repeat_shift,
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self.auto_repeat_ctrl
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)
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self.last_seek_time = current_time
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def should_update_display(self) -> bool:
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"""Check if display should be updated based on throttling"""
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current_time = time.time()
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if current_time - self.last_display_update >= self.DISPLAY_UPDATE_THROTTLE:
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self.last_display_update = current_time
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return True
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return False
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def seek_to_frame(self, frame_number: int):
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"""Seek to specific frame"""
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self.current_frame = max(0, min(frame_number, self.total_frames - 1))
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@@ -1723,12 +1806,25 @@ class VideoEditor:
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self.load_current_frame()
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while True:
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# Only update display if needed
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# Update auto-repeat seeking if active
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self.update_auto_repeat_seek()
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# Only update display if needed and throttled
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if self.should_update_display():
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self.display_current_frame()
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delay = self.calculate_frame_delay() if self.is_playing else 30
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key = cv2.waitKey(delay) & 0xFF
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# Handle auto-repeat timeout - only stop if no key is pressed for a longer period
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if key == 255 and self.auto_repeat_active: # 255 means no key pressed
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# Check if enough time has passed since last key press
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if time.time() - self.last_seek_time > 0.3: # 300ms timeout (increased)
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self.stop_auto_repeat_seek()
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elif key != 255 and self.auto_repeat_active:
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# A key is pressed, update the last seek time to prevent timeout
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self.last_seek_time = time.time()
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# Get modifier key states
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window_title = "Image Editor" if self.is_image_mode else "Video Editor"
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modifiers = cv2.getWindowProperty(window_title, cv2.WND_PROP_AUTOSIZE)
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@@ -1736,10 +1832,12 @@ class VideoEditor:
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# We'll handle this through special key combinations
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if key == ord("q") or key == 27: # ESC
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self.stop_auto_repeat_seek()
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break
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elif key == ord(" "):
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# Don't allow play/pause for images
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if not self.is_image_mode:
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self.stop_auto_repeat_seek() # Stop seeking when toggling play/pause
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self.is_playing = not self.is_playing
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self.save_state()
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elif key == ord("a") or key == ord("A"):
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@@ -1747,27 +1845,25 @@ class VideoEditor:
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if not self.is_image_mode:
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# Check if it's uppercase A (Shift+A)
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if key == ord("A"):
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self.seek_video_with_modifier(
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-1, True, False
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) # Shift+A: -10 frames
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self.start_auto_repeat_seek(key, -1, True, False) # Shift+A: -10 frames
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else:
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self.seek_video_with_modifier(-1, False, False) # A: -1 frame
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self.start_auto_repeat_seek(key, -1, False, False) # A: -1 frame
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elif key == ord("d") or key == ord("D"):
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# Seeking only for videos
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if not self.is_image_mode:
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# Check if it's uppercase D (Shift+D)
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if key == ord("D"):
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self.seek_video_with_modifier(1, True, False) # Shift+D: +10 frames
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self.start_auto_repeat_seek(key, 1, True, False) # Shift+D: +10 frames
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else:
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self.seek_video_with_modifier(1, False, False) # D: +1 frame
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self.start_auto_repeat_seek(key, 1, False, False) # D: +1 frame
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elif key == 1: # Ctrl+A
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# Seeking only for videos
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if not self.is_image_mode:
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self.seek_video_with_modifier(-1, False, True) # Ctrl+A: -60 frames
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self.start_auto_repeat_seek(key, -1, False, True) # Ctrl+A: -60 frames
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elif key == 4: # Ctrl+D
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# Seeking only for videos
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if not self.is_image_mode:
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self.seek_video_with_modifier(1, False, True) # Ctrl+D: +60 frames
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self.start_auto_repeat_seek(key, 1, False, True) # Ctrl+D: +60 frames
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elif key == ord("-") or key == ord("_"):
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self.rotate_clockwise()
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print(f"Rotated to {self.rotation_angle}°")
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